A large exercise of company stock options by Jeffrey Dierks, Chief Commercial Officer at Harmony Biosciences (NASDAQ:HRMY) was disclosed in a new SEC filing on September 30, as part of an insider exercise. What Happened: The latest Form 4 filing on Monday with the U.S. Securities and Exchange Commission uncovered Dierks, Chief Commercial Officer at Harmony Biosciences, exercising stock options for 200 shares of HRMY. The total transaction was valued at $3,529. The Tuesday morning market activity shows Harmony Biosciences shares up by 4.12%, trading at $41.65. This implies a total value of $3,5…